The Trident tuple is the data model of a Trident topology. The Trident tuple is the basic unit of data that can be processed by a Trident topology. Each tuple consists of a predefined list of fields. The value of each field can be a byte, char, integer, long, float, double, Boolean, or byte array. During the construction of a topology, operations are performed on a tuple, which will either add new fields to the tuple or replace the tuple with a new set of fields.
Each of the fields in a tuple can be accessed by name, (getValueByField(String)), or its positional index, (getValue(int)), in the tuple. The Trident tuple also provides convenience methods, such as getIntegerByField(String), which saves you from typecasting the objects.
